Zac Efron supplied his singing talents to Adult Swim’s ‘Robot Chicken’ for an episode, in a parody of Billy Joel’s ‘Piano Man.’

Warning Strong Adult Content

Seth Green && Matthew Senreich’s Emmy Award Winning stop motion animated series on Cartoon Network’s late night Adult Swim that airs in the U.S. I find it obnoxiously rude, crass, but others I know find it hilarious.

They’ve parodied Hannah Montana, and now they’ve gone after Billy Joel? It seems HSM’s goody-two-shoes is saying ciao to his ’squeaky-clean’ image.

Kellie Pickler wrote the following holiday greeting on her MySpace. She called the entry “LaZy RiVer”.

“MERRY CHRISTMAS!!!!! Just wanted to send my love to all of you for blessing me with a wonderful year! I hope that you are able to spend your holiday season with good company and people you love. One of my friends (Meghan) from college and I randomly decided to have a girls week and come to the Bahamas for Christmas. The weather has been a little disappointing since we’ve been here….there has been an overcast everyday and it rained all day yesterday! I guess Meghan and I were good girls this year because Santa brought us sunshine today!!! WAHoooo!! So having said that I’m not wasting any time… we’re hitting the water slides!!!! love you all so much! happy holidays!! xoxo pickler. PS: Don’t forget to look for me on Dick Clark’s New Years Rockin’ Eve on ABC!!! :)”

Rihanna and Chris Brown are pictured here shopping together at the Louis Vuitton store around Champs Elysees on Thursday (December 18) in Paris, France. She’s in France because tomorrow (Friday 19) night she’s going to perform live on the Star Academy final show.

Love the sunglasses at night.

Rihanna is wearing a black on black ensemble. I quite like the ruffly top and skin tight legging pants. Chris played the dutiful boyfriend role and waited around while she shopped to her heart’s content. He is wearing a necklace with a Stormtrooper pendant (the soldiers with white body armor from Star Wars.)

Britney Spears got into the holiday spirit by Christmas caroling in Los Angeles on Friday with talk show host Ellen DeGeneres. The show will air Tuesday December 16th.

Britney’s wearing a festive red crushed velvet hoop gown, tartan shawl and bonnet for the outing, while Ellen donned a mistletoe-topped bonnet and green crushed velvet outfit. Both gals wore white gloves to top off their vintage look.

Check out the old-fashioned dresses!

Take a listen to Christina’s rendition of Beautiful at CNN Heroes. What an absolutely flawless performance. She has amazing range. I don’t know why people compare and categorize her with Britney or Lady Gaga.

Some people have negatively commented about the runs and embellishments she does in this rendition, but in my opinion, they are completely appropriate for the type of performance she was giving. Runs and embellishments are what truly *showcase* her amazing vocal talent and range, and by doing them she emphasizes that she is not lip-synching.

She received a standing ovation at the end.

Rihanna reminds me of a combo of Mr. T. and Prince. This look does one thing for sure… takes the focus off her hairstyle. Like seriously… who is this girl’s stylist? Here she is covered in necklaces adorned with silver crucifixes, keys, horseshoes and what looks like hands? while having a bite to eat at the Cafe Med at Sunset Plaza in West Hollywood.

She’s been in rehearsals getting ready for her performace at Sunday’s American Music Awards airing @ 8PM ET/PT on ABC.

Kanye West had this to say about her:

“Rihanna had a really breakout year and became the biggest artist. Like, Rihanna sells more records than me all together if you include her in national sales and she is arguably the biggest artist in the world right now.”

Here again is Nick Jonas kicking off National Diabetes Month by attending the Juvenile Diabetes Research Foundation (JDRF) Walk at Dodger Stadium in Los Angeles this afternoon. I didn’t see any pictures of his brothers, wonder if they were there to support him. I realize they don’t have to do EVERYTHING together, but for a cause such as this, it would have been nice to see them all there.

Nick, who at 16 is the youngest of the brothers, has a partnership with Bayer Diabetes Care. People can log on to Nick’s Simple Wins where they can find out some information that he has shared about his very own personal experiences living with diabetes.

Tune in Sunday night @ 8 P.M. to the Disney Channel if you’d like to see Nick’s PSA on Juvenile Diabetes.

MTV will air a 90-minute documentary, ” For the Record” which hits the airwaves November 30th @10 PM. That’s 2 days before her new album drops on her birthday. It’s all about Britney Spears making her come back. She had this to say about why she’s doing it:

“So much has gone on over the last couple of years and there’s a lot that people don’t know about me that I want them to know,” Britney says. “I wanted to make this film because I started to feel like I wasn’t being seen in the light that I wanted to be seen in. This is an opportunity to set the record straight and talk about what I’ve been through and where I’m headed.”

Two of the Jonas Brothers, Kevin and Joe, recently registered to vote.

Ellen the talk show host thinks the upcoming American election to be so important that she’s committed to a partnership with Declare Yourself during the month of September, where they’ll be registering people at her show’s tapings.

On the day they taped the fall premiere of her show, Kevin, who is 20, and Joe, who is 18, were two of the first voter registrants. Ellen will make the official announcement on her show tomorrow, so tune in.

To find out how you can register yourself, visit DeclareYourself.com.

Katy rocked this watermelon ensemble for the Today Show Summer Concert Series the other day (August 29th) with the “Songs of Summer” show, along with the Pussycat Dolls, and Jesse McCartney.

The first 250 people who got there early got the best view, and a limited edition t-shirt, while the first 25 fanatics received a wristband to meet Katy after the show.

I just don’t know what to say about Katy’s outfit. Girl needs to kiss her stylist goodbye. Honestly it is so ridiculous I am at a loss for words. Her makeup is a joke as well. What is wrong with her? Jesse looks great in his grey suit and tie though.